Shampoo headrest



FIG. 1 is a perspective view of a shampoo headrest showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof, the right side being a mirror image;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines depicting portions of the shampoo headrest in the drawing are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a shampoo headrest, as shown and described. 